Four dangerous psychopaths (two played by Jack Palance and Martin Landau) easily escape from an asylum run by a VERY liberal doctor (Donald Pleasance) during a blackout. They proceed to terrorize a doctor (Dwight Schultz), his wife, their little daughter, the doctor's sister (who is on the verge of a nervous breakdown) and a stranger. And the electricity is out, the phone lines are cut and the house is completely isolated...
I saw this in a theatre in 1982 and it scared me silly. It had me jumping and two sequences (one involving a baby sitter on a bed and the other with blood dripping on a woman's face) had me cringing. Seeing it over 20 years later, it's not as scary but still is an above average horror film.
The film moves quickly, there are nice directorial touches from Jack Sholder (who went on to direct "Nightmare on Elm Street 2") and it has an above average cast--Pleasance seems a little embarrassed but Palance is good and Landau is clearly enjoying himself. There are quite a few scary moments, a good spooky score and the final half hour is an all out assault on the family. Also it's pretty restrained in terms of gore.
But there are huge gaps in logic which I didn't notice the first time and I really did not need a sequence where it is insinuated that a little girl has been molested. Also the young girl of the family is the most annoying little brat I've ever seen--I was desperately hoping she'd get knocked senseless just to shut her up. And it really has no ending.
Still, if you ignore the plot holes this film really can work on you. Best seen at night, in a dark room...and all alone:)